Parents and neighbours of The Scots College in Bellevue Hill in Sydney's eastern suburbs, were left terrified when Year 12 students went on a day-long rampage.

Officers said they seized alcohol and issued a move on direction to the group, who reportedly threw glass bottles at younger students, overturned a grandstand on the main oval and hijacked a golf cart, News Corp reports.

Students from The Scots College allegedly ran a muck. Source: Google Maps

According to students, several buildings were also pelted with eggs and watermelons.

"It was horrible. The teachers were scared and some of the students were knocking on doors of the staff-room to get away from it all," one witness said.

One neighbour of the $34,900-per-year school saw cars being trampled on and students spray painting.